Improvement in pantographs



E. WARE. PANTOGRAPH.

No. 195,315. Patented sept.1e,1a77.

INVENTOR ATTORNEYS.

VN FETm, PNOTO-ILITHOGRAPHER. WASHINQKON, y C.

UNITED STATES PATENT OFFICE.

ELIJAH WARE, OF OMAHA, NEBRASKA.

IMPROVEMENT IN PANTQGRAPHS.

Speciiication forming part of Letters Patent No. 195,315, datedSeptember 18, 1877; application led July 13, 1877.

To all whom it may concern Be it known that I, ELIJAH WARE, of Omaha, inthe county of Douglas and State of Nebraska, have invented a new andImproved Pantograph, of which the following is a specilcation:

Figure l is a plan view of my improved pantograph. Fig. 2 is an endelevation.

Similar letters of reference indicate correspondin g parts. y

The object of my invention is to provide a simple and inexpensivepantograph which may be adapted to large or small work, as may berequired.

In the drawing, A and B are bars, which are connected to transverse barsC D by pins a, which pass through both sets ot' bars and form jointsthat permit of moving the bars upon each other.

The bars A B are provided with holes b, through which the pins a may beplaced when it :is desired to shift the bar C toward or away from thepivot of the instrument.

The transverse barG is provided with a number of holes, c, between thebars A B, for receiving a tracing-point or pencil, d, and in the bar D,outsideof the bar A, there is a hole, e, for receiving a tracingpoint orpencil, f.

The bar B is pivoted to a block, E, that is provided With spurs forretaiuin g it in place, and the end of the said bar is elongated, and toit is fitted an extension-bar, B', which is retained by a pin, g.

An extension-bar, A', is secured to the bar A by a screw, h. The bars AB are provided with holes a', for receiving pins, by which thetransverse bar C is jointed to them. This bar is also provided withholes a', to admit of moving it lengthwise. Near the end of the bar Cthere is a hole for receiving the pencil or tracingpoint fi.

At the end of the bar B there is a casterwheel, k, which may be shiftedto the bar B when the bars A' B' Care not used. These last-mentionedbars are used in copying or enlarging or reducing large work. The sizeof the copy is varied by shifting the bar C' toward or away from thepivot ot' the instrument, and by moving the said bar so as to change theposition of the pencil or tracingpoint t.

When the instrument is used for smaller work the bars A B aredisconnected, and the pencils or tracing-points d f are used.

The pivot or block, with spurs E,may, when desired, be changed to theextreme end of the bar B'.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The combination of the bars A B C with the bars A B CD, substantially as shown and described.

ELIJAH WARE.

Witnesses:

HARRIET D. McOLoUD, ELLEN J. WARE.

